108 NATURAL RESOURCES SURVEY 



streams of any size in the Santa Fe region and on Mt. Taylor. 

 It seems to be entirely absent from the Sandias although 

 there are many streams there that would seem to be entirely 

 suited to its needs. 



THE COTTONWOOD FORESTS 



These are so open that they are invaded by the grasses 

 and herbs of the open parts of the valley and there are not as 

 many species hers as one would expect. The following 

 are however characteristic: 



Hypantria cunea, Drury. The Fall Web- worm is common 

 here as along the city streets and on the cottonwood gener- 

 ally. 



An unknown leaf-miner does a great deal of damage to 

 'these trees. In many cases nearly every leaf on a large tree 

 will become completely riddled by Sep. or late Aug. 



Cicindela vulgaris, Say. Breeds in the hard ground among 

 the cottonwoods. 



B Dicerca prolongata, Lee. 



* Proctocanthus rufus, Will. Is occasionally found on 

 the mesa but it is more common on dunes in the valley cov- 

 ered at least partly by the cottonwoods. 



And we must not forget the mosquitoes that, when the 

 Rio Grande is high, breed in countless multitudes in the 

 ponds along the valley. 



JUNCUS PEPPERWEED SOCIETY 



This is an alkaline meadow society and the forms found 

 here are pretty well distributed over the valley generally. 

 The following orthoptera are however characteristic. 



Camnula pelluoida One was collected from high up on Old 

 Baldy of the Jemez It is more common along the Jemez 

 River than at any other place in our region, from whence it 

 descends the Rio Grande Valley to Albuquerque. It was 

 not collected at all from either the mesa or the Sandia Mts. al- 

 though it would seem that the grassy banks about Whitcomb 

 Springs, and the stream in Hell Canon would be entirely suited 

 to them. Adams in the Isle Royale report states that there it 

 occurs "On dry upland soil" This illustrates again the same 

 principle mentioned under Dissosteria caroliniana. 



Melanoplus atlantis. The Lesser Migratory Locust occurs 

 occasionally in the more moist situations on the mesa and 



